Home / 21,487.91-32,227.65-10,811.40

Finding the Fourth Proportional to 21,487.91, 32,227.65 and 10,811.40

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Solution

The fourth proportional to 21,487.91, 32,227.65 and 10,811.40 is: 16,214.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.91 : 32,227.65 = 10,811.40 : x
  2. Step 2: Convert to fraction form
    21,487.91/32,227.65 = 10,811.40/x
  3. Step 3: Cross multiply
    21,487.91x = 32,227.65 × 10,811.40
  4. Step 4: Simplify right side
    21,487.91x = 348,426,015.21
  5. Step 5: Solve for x
    x = 348,426,015.21/21,487.91
  6. Step 6: Final answer
    x = 16,214.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.